What term describes a tidal cycle of one high tide and one low tide per day?

What term describes a tidal cycle of one high tide and one low tide per day?

• A. Diurnal Tide
• B. Lunar Tide
• C. Mean Sea Level
• D. Dynamic Theory of Tides

Answer: (A)

Tides can show different daily patterns, and the key idea is how often highs and lows appear within roughly a 24-hour period. One high tide and one low tide each day is called a diurnal tide. This pattern occurs because the gravitational pull of the Moon (and the Sun) interacts with the shape of coastlines and ocean basins in a way that only one bulge works its way past a given coastline each day, giving a single rise and fall per lunar day. The other terms don’t describe this daily pattern. A lunar tide is not a standard way to name the cycle; tides result from both Moon and Sun but aren’t defined simply as a “lunar” pattern. Mean sea level is just a reference height used for measuring tides, not the description of how many tides occur daily. The dynamic theory of tides refers to modeling and predicting tidal motion, not the simple frequency pattern of highs and lows.

Tides can show different daily patterns, and the key idea is how often highs and lows appear within roughly a 24-hour period. One high tide and one low tide each day is called a diurnal tide. This pattern occurs because the gravitational pull of the Moon (and the Sun) interacts with the shape of coastlines and ocean basins in a way that only one bulge works its way past a given coastline each day, giving a single rise and fall per lunar day.

The other terms don’t describe this daily pattern. A lunar tide is not a standard way to name the cycle; tides result from both Moon and Sun but aren’t defined simply as a “lunar” pattern. Mean sea level is just a reference height used for measuring tides, not the description of how many tides occur daily. The dynamic theory of tides refers to modeling and predicting tidal motion, not the simple frequency pattern of highs and lows.